Plugin btcguild_hashrate_: fix code style issues reported by flake8

plugins/currency/bitcoin/btcguild_hashrate_

@@ -7,7 +7,7 @@ import urllib2
 import json
 
 URL = 'https://www.btcguild.com/api.php?api_key='
-API_KEY =  sys.argv[0][(sys.argv[0].rfind('_')+1):]
+API_KEY = sys.argv[0][(sys.argv[0].rfind('_')+1):]
 
 STATS = URL + API_KEY
 
@@ -17,8 +17,8 @@ command = ''
 if len(sys.argv) > 1:
     command = sys.argv[1]
 
-header = {'User-Agent':'Mozilla/5.0'}
-request = urllib2.Request(STATS,headers=header)
+header = {'User-Agent': 'Mozilla/5.0'}
+request = urllib2.Request(STATS, headers=header)
 mining_stats_raw = urllib2.urlopen(request)
 mining_stats = json.load(mining_stats_raw)
 workers = mining_stats['workers']
@@ -38,4 +38,3 @@ for worker in workers:
         hash_rate = workers[worker]['hash_rate']
         label = workers[worker]['worker_name']
         print label + ".value %d" % int(hash_rate)
-

t/test-exception-wrapper.expected-failures

@@ -58,7 +58,6 @@ plugins/cpu/cpuutil
 plugins/cpu/multicpu1sec
 plugins/cpu/process_count
 plugins/cpu/process_cpushare
-plugins/currency/bitcoin/btcguild_hashrate_
 plugins/currency/bitcoin/slush_hashrate_
 plugins/currency/bitcoin/slush_reward_
 plugins/currency/ethereum/ethermine_hashrate_